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* [https://www.yacpdb.org/#13100 Yet another chess problem database - Problem 13100, Korhonen, Mika, 2nd WCCT, 1980, 5th Place, 1980-1983]
* [https://en.chessbase.com/post/need-some-help-mate Need some help, mate?] by [[Frederic Friedel]], [[ChessBase|ChessBase News]], December 25, 2018
* [https://en.chessbase.com/post/computers-solving-chess-problems Computers solving chess problems] by [[Frederic Friedel]], [[ChessBase|ChessBase News]], September 08, 2020
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